|Title||Slide rule, Ivorite, 4181-1C, with holder manufactured by Keuffel & Esser Company, Hoboken, ca. 1953.|
|Object Name||Rule, Slide|
|Collection||Keuffel & Esser Company Collection|
Ivorite slide rule, 4181-1C, with holder manufactured by Keuffel & Esser Company, Hoboken, ca. 1953. Engraved white plastic with aluminum fittings and clear plastic slide, 7" wide x 1-5/8" high. With: dark green leather sheath with pocket clip; original two-piece tray box with end label; softcover 123-page manual, last copyright 1947, ca. 5" x 7" high; 8-page supplement to the manuals copyright 1953, ca. 5" x 7" high; instruction sheet laid-in box. All items were originally stored in the box.
Object name as found on box label: [Catalog no.] 4181-1C | Ivorite Slide Rule | With Scale Arrangement as on the | Log Log Duplex Decitrig.
|Year Range from||1953|
|Year Range to||1960|
K & E
Keuffel & Esser Co.
|Caption||slide rule, side 1|